CN105606496B - A kind of simulation discrete particles burst the experimental rig and test method of process - Google Patents
A kind of simulation discrete particles burst the experimental rig and test method of process Download PDFInfo
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- CN105606496B CN105606496B CN201510917937.XA CN201510917937A CN105606496B CN 105606496 B CN105606496 B CN 105606496B CN 201510917937 A CN201510917937 A CN 201510917937A CN 105606496 B CN105606496 B CN 105606496B
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- 239000002245 particle Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004088 simulation Methods 0.000 title claims abstract description 20
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 230000009172 bursting Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000011236 particulate material Substances 0.000 description 14
- 239000008187 granular material Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000004321 preservation Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
A kind of simulation discrete particles burst the experimental rig and test method of process, the device includes: bracket, pedestal upper end is connected with crossbeam, crossbeam both ends are provided with first pulley and second pulley, bracket side is provided with motor, the bracket other side is provided with Measuring plate, scale is provided in Measuring plate, hollow cylinder is disposed vertically in Measuring plate, hollow cylinder upper end is provided with cover, lower ending opening, cylinder outer wall is provided with scale, to read the height of discrete particles in hollow cylinder, rigid connection coil holder is located on pulley, the cover of one end connection hollow cylinder upper end, the other end is fixed in flywheel.Strong applicability of the present invention, it is controllable, it is easy to operate, by adjusting pilot cylinder diameter, loading test material height and variable-frequency governor, it realizes the test simulation that bursts under different restrained boundary control conditions, the radius of influence for process of testing of bursting, accumulation center height, time of bursting, form of bursting etc. is recorded and measured by Measuring plate and high-speed camera.
Description
Technical field:
The present invention relates to engineer application mechanical technology fields, and in particular to a kind of simulation discrete particles burst the test of process
Device and test method.
Background technique:
The movement of bulk particulate material is a kind of forms of motion common in nature and industrial processes, in geology calamity
Evil, chemical industry and agricultural etc. all play important role among numerous fields.But since particle motion process has again
Polygamy is still the hot and difficult issue problem of academia and engineering circles concern, carries out to the motion process of bulk particulate material so far
In-depth study will undoubtedly produce great pushing effect to the development in field involved by it.
Discrete media theory and two class of continuum theory are broadly divided into for the research theory of granular materials at present, it is discrete
Material is considered as by MEDIUM THEORY to be made of discrete particle, by with modern numerical calculations sides such as statistical analysis means and discrete elements
Method studies the movement of bulk particulate material, and this Theory comparison meets the practical preservation situation of material, with strong applicability,
But the main problem of its discrete media theory is that current micromodel is relatively simple, and micro-parameter has been difficult to when numerical value calculates
Effect determines, and calculation amount is larger；Bulk particulate material is considered as the continuous fluid that can produce large deformation by continuum theory, no
Stress the Micromechanics behavior of investigation granular materials, but emphasis investigates the movement row of bulk particulate material using macro-indicators
For thus continuum theory is suitable for studying large-scale particle motion process, but for particular problem usually in order to close
With reduced equation and need to make some it is assumed that causing the scope of application of particular model equation extremely limited, also result in
Continuum Model is difficult to be efficiently applied among complicated moving condition.
In view of in current bulk particulate material theoretical research, there are still many problems, to push bulk particulate material movement
Research, just must further carry out for bulk particulate material movement experimental study, observe experimental phenomena, study mechanics machine
Reason analyzes test data, provides data supporting for the correctness and validity of theoretical research.The moment of discrete particles body bursts entirely
Certainly test is a kind of simple and effective test method, real by releasing whole restrained boundaries of bulk particulate material rapidly
The starting of existing granular materials.But this starting method is too simple, meanwhile, also only represent a kind of canonical form of granular materials starting
Formula, the actually starting of bulk particulate material and the disarmed mode of restrained boundary are in close relations, but existing test can not be effective
Control constraints boundary.
Summary of the invention:
Burst the experimental rig and test method of process the object of the present invention is to provide a kind of simulation discrete particles, for fixed
Amount analyzes each governing factor and bursts to bulk particulate material the time of process and the influence of the elements such as form.
To achieve the above object, the invention adopts the following technical scheme:
A kind of simulation discrete particles burst the experimental rig of process, comprising: and bracket, the pedestal upper end are connected with crossbeam,
The crossbeam both ends are provided with first pulley and second pulley, and the bracket side is provided with motor, the setting of the bracket other side
There is Measuring plate, scale is provided in the Measuring plate, hollow cylinder has been disposed vertically in the Measuring plate, hollow cylinder upper end is set
It is equipped with cover, lower ending opening, cylinder outer wall is provided with scale, described electronic to read the height of discrete particles in hollow cylinder
Machine one end connects variable-frequency governor, the output axis connection flywheel of the other end by conducting wire, and the variable-frequency governor passes through conducting wire
Power supply is connected, variable-frequency governor adjusts motor speed, and rigid connection coil holder is located on pulley, and one end connects hollow cylinder upper end
Cover, the other end is fixed in flywheel.
High-speed camera is provided between the bracket and hollow cylinder.
The rigid connection line is cord.
The hollow cylinder is threadedly coupled with cover, is provided on the cover and is hung mother, and rigid connection and hangs female connection at line.
The pedestal lower end is provided with pedestal.
The bracket is column.
Simulation discrete particles are carried out using above-mentioned device to burst the test method of process, the specific steps are as follows:
Step 1: bracket is set up, and Measuring plate is horizontally arranged and is fixed, rigid connection line pass through first pulley and
Second pulley, both ends are connect with the hollow cylinder and flywheel tested respectively, and hollow cylinder lower end surface connects with test panel
Touching, and hollow cylinder and Measuring plate is made to keep plumbness, hollow cylinder axle center is consistent with the Measuring plate center of circle；
Step 2: opening the cover of hollow cylinder upper end, from hollow cylinder top injection discrete particles to certain altitude, leads to
The scale for crossing cylinder outer wall setting reads the height of discrete particles in hollow cylinder, then cover is fixed in hollow cylinder upper end；
Step 3: starting motor is exported by the rotation that variable-frequency governor controls motor, and motor output shaft turns
Dynamic that rigid connection line is wrapped on flywheel, rigid connection line moves in first pulley and second pulley to flywheel, just
Property connecting line is lifted up hollow cylinder, and hollow cylinder lower end surface is far from Measuring plate, discrete particles in hollow cylinder at the same time
Burst movement；
Step 4: when hollow cylinder is increased to certain altitude, filling discrete particles are distributed in Measuring plate in hollow cylinder
When upper, motor was closed；
Step 5: reading the radius of discrete particles distribution by the scale in Measuring plate, meanwhile, pine is measured with measurement probe
The height that scattered seed is accumulated at Measuring plate axle center；
Step 6: the size by changing the test material perhaps coefficient of friction of Measuring plate or hollow cylinder diameter,
The process of bursting of the discrete particles under different control conditions is obtained, and then obtains the time that each governing factor bursts to discrete particles
With the influence curve of form elements.
It is adjusted in the step 3 by revolving speed of the variable-frequency governor to motor, and then changes hollow cylinder and lift
Speed obtains the process of bursting for the discrete particles that different hollow cylinders lifts under speed.
High-speed camera, the process and form that record discrete particles burst are provided between bracket and hollow cylinder.
Multiple directions read the radius of discrete particles distribution on test panel, then averaged, obtain every time loose
Particle bursts the discrete particles distribution radius of test.
The present invention it is a kind of simulation discrete particles burst process experimental rig and test method the utility model has the advantages that can select
Different bulk particulate materials and initial geometrical condition carry out moment routed test entirely, can also pass through variable-frequency governor and speed regulation
Wheel, which is realized, bursts the adjusting and control of restrained boundary condition to bulk particulate material, to realize in different restrained boundary control strips
The test simulation that bursts under part is realized by changing pilot cylinder diameter and loading test material height to initial geometrical condition
Setting, burst by high-acruracy survey disk and high-speed camera to bulk particulate material under the conditions of to friction speed control process
The radius of influence certainly tested, the progress such as accumulation center height, time of bursting, form of bursting effectively record and measurement, realization pine
Burst test simulation of the scattered seed material under different restrained boundary control conditions, and then each influence factor is obtained to the time of bursting
With the relation curve of the test element such as accumulation form, test and verify data, promotion discrete particles are provided for theory development
The development of material movement theory.Compared with existing moment bursts experimental rig entirely, the present invention has strong applicability, controllable,
Feature easy to operate.
Detailed description of the invention:
Fig. 1 be the present invention it is a kind of simulation discrete particles burst process experimental rig structural schematic diagram；
1- bracket, 2- pedestal, 3- crossbeam, 4- first pulley, 5- second pulley, 6- motor, 7- variable-frequency governor, 8- tune
Speed wheel, 9- Measuring plate, 10- hollow cylinder, 11- cord, 12- high-speed camera, 13- discrete particles.
Specific embodiment:
Below with reference to embodiment, the present invention is described in further detail.
According to Fig. 1, a kind of simulation discrete particles burst the experimental rig of process, comprising: bracket 1,1 lower end of bracket are set
It is equipped with pedestal 2,1 upper end of bracket is connected with crossbeam 3, and the bracket 1 can be column, and 3 both ends of crossbeam are provided with the
One pulley 4 and second pulley 5,1 side of bracket are provided with motor 6, and described 6 one end of motor connects frequency control by conducting wire
Device 7, the variable-frequency governor 7 adjust 6 revolving speed of motor by wire connecting power, variable-frequency governor 7, and 1 other side of bracket is set
It is equipped with Measuring plate 9, scale is provided in the Measuring plate 9, has been disposed vertically hollow cylinder 10, open circles in the Measuring plate 9
10 upper ends of cylinder are provided with cover, and the hollow cylinder is threadedly coupled with cover, are provided on the cover and hang mother, hollow cylinder 10
Lower ending opening, cylinder outer wall are provided with scale, and to read the height of discrete particles 13 in hollow cylinder, cord 11 is erected at pulley
On, one end of cord 11 is connected to the mother that hangs on cover, and 11 other end of cord is fixed on the output shaft of motor 6, is cord
It winds more convenient, flywheel 8 can also be set on the output shaft of motor 6, cord 11 is fixed on flywheel 8.
It is possible to further be provided with high-speed camera 12 between the bracket 1 and hollow cylinder 10, loose is recorded
The process and form that grain 13 bursts.
Simulation discrete particles are carried out using above-mentioned device to burst the test method of process, the specific steps are as follows:
Step 1: bracket 1 is set up, and Measuring plate 9 is horizontally arranged and is fixed, cord 11 passes through 4 He of first pulley
Second pulley 5, both ends are connect with the hollow cylinder 10 and flywheel 8 tested respectively, 10 lower end surface of hollow cylinder and test
Disk 9 is in contact, and hollow cylinder 10 and Measuring plate 9 is made to keep plumbness, and 10 axle center of hollow cylinder and 9 center of circle of Measuring plate are kept
Unanimously；
Step 2: opening the cover of 10 upper end of hollow cylinder, and discrete particles 13 are injected above hollow cylinder 10 to certain
Highly, the height of discrete particles 13 in hollow cylinder 10 is read by the scale that cylinder outer wall is arranged, then cover is fixed in sky
10 upper end of heart cylinder；
Step 3: starting motor 6 is exported by the rotation that variable-frequency governor 7 controls motor, motor output shaft
Cord 11 is wrapped on flywheel 8 by rotation, and cord 11 moves in first pulley 4 and second pulley 5 to flywheel 8, cord
11 are lifted up hollow cylinder 10, and 10 lower end surface of hollow cylinder is far from Measuring plate 9, discrete particles in hollow cylinder 10 at the same time
13 burst movement；
Step 4: when hollow cylinder 10 is increased to certain altitude, filling discrete particles 13 are distributed in hollow cylinder 10
When in Measuring plate 9, motor 6 is closed；
Step 5: reading the radius that discrete particles 13 are distributed by the scale in Measuring plate 9, meanwhile, it is surveyed with measurement probe
Obtain the height that discrete particles 13 are accumulated at 9 axle center of Measuring plate；
Step 6: by adjusting the variable-frequency governor 7 connected in 6 one end of motor by conducting wire, 6 turns of motor are adjusted
Speed, and then change hollow cylinder 10 and lift speed, it obtains different hollow cylinders 10 and lifts bursting for discrete particles 13 under speed
Certainly process；Can also by changing the size of test material perhaps 10 diameter of coefficient of friction or hollow cylinder of Measuring plate 9,
The process of bursting of the discrete particles under different control conditions is obtained, and then obtains the time that each governing factor bursts to discrete particles
With the influence curve of form elements；
It further, during the test, can be by setting up high-speed camera between bracket 1 and hollow cylinder 10
12, the process and form that record discrete particles burst；
Further, in step 5, multiple directions read the radius of discrete particles distribution on test panel 9, then ask
It is averaged, obtains each discrete particles and burst the discrete particles distribution radius of test.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.
Claims (9)
- The experimental rig of process 1. a kind of simulation discrete particles burst, it is characterised in that: include: bracket, the pedestal upper end is solid It is connected to crossbeam, the crossbeam both ends are provided with first pulley and second pulley, and the bracket side is provided with motor, and bracket is another Side is provided with Measuring plate, and scale is provided in the Measuring plate, and hollow cylinder, the branch have been disposed vertically in the Measuring plate High-speed camera is provided between frame and hollow cylinder, hollow cylinder upper end is provided with cover, lower ending opening, cylinder outer wall setting There is scale, to read the height of discrete particles in hollow cylinder, described motor one end connects variable-frequency governor by conducting wire, separately The output axis connection flywheel of one end, by wire connecting power, variable-frequency governor adjusts motor and turns the variable-frequency governor Speed, rigid connection coil holder are located on pulley, and one end connects the cover of hollow cylinder upper end, and the other end is fixed in flywheel.
- The experimental rig of process 2. a kind of simulation discrete particles according to claim 1 burst, it is characterised in that: described rigid Property connecting line be cord.
- The experimental rig of process 3. a kind of simulation discrete particles according to claim 1 burst, it is characterised in that: the sky Heart cylinder is threadedly coupled with cover.
- The experimental rig of process 4. a kind of simulation discrete particles according to claim 1 burst, it is characterised in that: the cylinder It covers to be provided with and hangs mother, rigid connection and hangs female connection at line.
- The experimental rig of process 5. a kind of simulation discrete particles according to claim 1 burst, it is characterised in that: the branch Frame lower end is provided with pedestal.
- 6. carrying out simulation discrete particles using device described in claim 1 to burst the test method of process, it is characterised in that: tool Steps are as follows for body:Step 1: bracket is set up, and Measuring plate is horizontally arranged and is fixed, and rigid connection line passes through first pulley and second Pulley, both ends are connect with the hollow cylinder and flywheel tested respectively, and hollow cylinder lower end surface is in contact with Measuring plate, And hollow cylinder and Measuring plate is made to keep plumbness, hollow cylinder axle center is consistent with the Measuring plate center of circle；Step 2: opening the cover of hollow cylinder upper end, from hollow cylinder top injection discrete particles to certain altitude, passes through circle The scale of drum outer wall setting reads the height of discrete particles in hollow cylinder, then cover is fixed in hollow cylinder upper end；Step 3: starting motor is exported by the rotation that variable-frequency governor controls motor, and the rotation of motor output shaft will Rigid connection line is wrapped on flywheel, and rigid connection line moves in first pulley and second pulley to motor output shaft, Rigid connection line is lifted up hollow cylinder, and hollow cylinder lower end surface is far from Measuring plate, at the same time loose in hollow cylinder Grain bursts movement；Step 4: when hollow cylinder is increased to certain altitude, and filling discrete particles are distributed in Measuring plate in hollow cylinder, Close motor；Step 5: reading the radius of discrete particles distribution by the scale in Measuring plate, meanwhile, loose is measured with measurement probe The height that grain is accumulated at Measuring plate axle center；Step 6: the size by changing the test material perhaps coefficient of friction of Measuring plate or hollow cylinder diameter obtains The process of bursting of discrete particles under different control conditions, and then obtain the time and shape that each governing factor bursts to discrete particles The influence curve of state element.
- 7. according to the method described in claim 6, it is characterized by: in the step 3, by variable-frequency governor to electronic The revolving speed of machine is adjusted, so change hollow cylinder lift speed, obtain different hollow cylinders lift it is loose under speed The process of bursting of particle.
- 8. according to the method described in claim 6, it is characterized by: being provided with high-speed camera between bracket and hollow cylinder Machine, the process and form that record discrete particles burst.
- 9. according to the method described in claim 6, it is characterized by: multiple directions are read in Measuring plate in the step 5 The radius for taking discrete particles to be distributed, then averaged obtain each discrete particles and burst the discrete particles distribution half of test Diameter.
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| CN109900448A (en) * | 2019-04-10 | 2019-06-18 | 沈阳建筑大学 | The device and method with active force of blocking is impacted in measurement discrete particles motion process |
| CN110686993A (en) * | 2019-10-31 | 2020-01-14 | 长江水利委员会长江科学院 | Test method for dynamically recording erosion inside dam |
| RU208339U1 (en) * | 2021-04-13 | 2021-12-14 | Федеральное автономное учреждение "Российский дорожный научно-исследовательский институт" (ФАУ "РОСДОРНИИ") | A device for studying the movement of bulk materials over the surface |
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| DD211407A1 (en) * | 1982-11-03 | 1984-07-11 | Bkw Geiseltal Veb | APPARATUS FOR DETERMINING THE NATURAL BOOMING ANGLE OF ROLLING OXYGEN |
| CN102507382A (en) * | 2011-11-22 | 2012-06-20 | 武汉理工大学 | Testing method for evaluating working performance of self-compacting concrete |
| CN103926392A (en) * | 2014-04-14 | 2014-07-16 | 浙江建设职业技术学院 | Testing device for working performance of self-compacting concrete |
| CN104101698A (en) * | 2014-07-10 | 2014-10-15 | 国家电网公司 | Slump measuring instrument provided with double marker posts |
| CN104634700A (en) * | 2015-02-28 | 2015-05-20 | 郑州大学 | Concrete fluidity testing device |
| CN104914015A (en) * | 2015-05-26 | 2015-09-16 | 水利部交通运输部国家能源局南京水利科学研究院 | Sludge flowing state measuring device |
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2015
- 2015-12-11 CN CN201510917937.XA patent/CN105606496B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD211407A1 (en) * | 1982-11-03 | 1984-07-11 | Bkw Geiseltal Veb | APPARATUS FOR DETERMINING THE NATURAL BOOMING ANGLE OF ROLLING OXYGEN |
| CN102507382A (en) * | 2011-11-22 | 2012-06-20 | 武汉理工大学 | Testing method for evaluating working performance of self-compacting concrete |
| CN103926392A (en) * | 2014-04-14 | 2014-07-16 | 浙江建设职业技术学院 | Testing device for working performance of self-compacting concrete |
| CN104101698A (en) * | 2014-07-10 | 2014-10-15 | 国家电网公司 | Slump measuring instrument provided with double marker posts |
| CN104634700A (en) * | 2015-02-28 | 2015-05-20 | 郑州大学 | Concrete fluidity testing device |
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